Ecosystem 6th Grade

1. UNIT 5
ECOSYSTEMS

2. WATH IS AN ECOSYSTEM?
 Ecosystems are the interaction between
living organism and the non-living physical
environment in which they live.
 They can be small or large and can exist
inside each other.

3. WHAT MAKES UP AN ECOSYSTEM?
ELEMENTS ORGANISATION
Climate Habitat: is a place where
an organism lives
Physical structure Population: organism of
the same species within
an ecosystem
Altitude Comunity: different
populations interact with
each other in comunities
longitude

4. TROPICAL RAINFOREST DEFINITION
 Are one of the most diverse ecosystems on land.
 They are foun in all the world.
 The warm is wet.

5. TROPICAL RAINFOREST PARTS
1.EMERGENT LAYER: emergent trees are usually about 50 or 60
metres tall.
Are adapted to survive in hot temperatures and strong winds.
2.CANOPY LAYER: the trees in the canopy are often more than 30
metres tall.
Many never leave the treetops and spend their whole lifecycle in
the canopy.
3.UNDESTORY LAYER: this is the part of the fores made up of
trunks,branches,bushes and shurbs.
Predators live in this section.
4.FOREST FLOOR: this part of the forest belongs to invertebrates,fungi
and bacteria.
The forest floor is dark.

6. TROPICAL RAINFOREST FOOD WEBS

7. TUNDRA DEFINITION
 They occupies the areas around the Artic
Circle and some parts of Antartica.
 They have low temperatures and no light
for half the year

8. TUNDRA
PHYSICAL ENVIROMENT LIVING THINGS
-PERMAFROST PLANTS: LICHENS,
MOSSES ,ARTIC WILLOWS,
ARTIC POPPIES…
-LITTLE RAINFALL ANIMALS: ARTIC FOXES,
ARTIC HARES, REINDEER,
SONWY OWLS, POLAR
BEARDS…
-LOW TEMPERATURES
-SHORT SUMMER SEASON

9. TUNDRA FOOD WEBS

10. FOOD CHAINS
 PRODUCERS (PLANTS)
 CONSUMERS:
 PRIMARY (HERBIVORES)
 SECONDARY (CARNIVORES AND OMNIVORES)
 TERTIARY (CARNIVORES AND OMNIVORES)
 DECOMPOSERS (FEED ON OTHER DEATH
ORGANISMS)

11. FOOD WEBS
-THERE IS AN INTERDEPENDENCE OF SPECIES WICH LIVE OFF
EACH OTHER.
-THESE INTERDEPENDENCIES FORM FOOD WEBS.
-ARE MADE UP OF DIFFERENT FOOD CHAINS.
-PRODUCE ENERGY (BIOMASS).
FOOD FOR THE NEXT TROPHIC LEVEL